实施胸外心脏按压时，因部位选择不当可导致()
A．大血管损伤
B．肋骨骨折
C．胸骨骨折
D．肝破裂
E．胃内容物反流
参考答案：A, B, D, E
每相邻两个计数单位之间的进率是0.1．______．
—Hi, Johnson, any idea where Susan is?
—It's class time, so she in the classroom now.[ ]
A. can be
B. must have been
C. might have been
D. should be
